Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.

Site-specific information:These maps represent unobstructed flow conditions and may be
unrepresentative when ice jams and/or debris are in place.

Extended rating:Rating Curve Extension - The Rating Curve Extension is calculated by using either a linear, logarithmic, or hydraulic technique to extend the rating curve above the currently established relationship between stage and flow.

Flood Impacts

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26

Extensive flooding in Lambertville with all of the low-lying areas of town inundated.

17

Water is up to the top of the Free Bridge piers.

16.5

Water is two-thirds of the way up Coryelle Street in New Hope.

16

Water is at the top of the wall in the Waterworks Parking Garage (river side) in New Hope.

15

River Road in New Hope begins to flood.

14.5

Park floods on East Ferry Street in New Hope. Patio floods in rear of the Landing. Waterview parking gagages in New Hope begin to flood.

14

Water covers the entire parking garage at the Waterworks Condominiums in New Hope.

13.5

Flooding occurs on Waterloo Street in New Hope via storm sewers.

13

Water is at the top of the stone retaining wall at the Landing in New hope. The Waterworks Condominium parking garage in New Hope begins to flood. Residents along the north and south ends of Lambert Lane in Lambertville sustain minor flooding, basements begin to flood.

12.5

The lower parking lot begins to flood at the Lambertville Station Inn and Restaurant.

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

Graphical representation of flood inundation for NWS flood categories are based on steady state hydraulic modeling of water surface elevations for incremented discharges. Map shows approximate inundation areas for given water surface elevations and should not be used for navigation or permitting or other legal purposes, but strictly as a planning reference tool.